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Wed, 29 Apr 2020 14:08:26 +0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 03TE8Ofp27787324 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 29 Apr 2020 14:08:24 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6E0A4A4059; Wed, 29 Apr 2020 14:08:24 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5124DA405D; Wed, 29 Apr 2020 14:08:22 +0000 (GMT) Received: from drishya.in.ibm.com (unknown [9.85.83.72]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Wed, 29 Apr 2020 14:08:22 +0000 (GMT) Date: Wed, 29 Apr 2020 19:38:19 +0530 From: Vaidyanathan Srinivasan To: Pratik Rajesh Sampat Subject: Re: [Skiboot] [PATCH v8 3/3] Self save API integration Message-ID: <20200429140819.GD4852@drishya.in.ibm.com> References: <20200423105438.29034-1-psampat@linux.ibm.com> <20200423105438.29034-4-psampat@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <20200423105438.29034-4-psampat@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.676 definitions=2020-04-29_05:2020-04-29, 2020-04-29 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 mlxscore=0 clxscore=1015 impostorscore=0 phishscore=0 bulkscore=0 spamscore=0 lowpriorityscore=0 adultscore=0 mlxlogscore=999 suspectscore=1 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004290115 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: svaidy@linux.ibm.com Cc: ego@linux.vnet.ibm.com, pratik.r.sampat@gmail.com, linuxram@us.ibm.com, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, oohall@gmail.com, skiboot@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" * Pratik Rajesh Sampat [2020-04-23 16:24:38]: > The commit makes the self save API available outside the firmware by defining > an OPAL wrapper. > This wrapper has a similar interface to that of self restore and expects the > cpu pir, SPR number, minus the value of that SPR to be passed in its > paramters and returns OPAL_SUCCESS on success. It adds a device-tree > node signifying support for self-save after verifying the stop API > version compatibility. > > The commit also documents both the self-save and the self-restore API > calls along with their working and usage. > > Signed-off-by: Pratik Rajesh Sampat Reviewed-by: Vaidyanathan Srinivasan > --- > doc/opal-api/opal-slw-self-save-reg-181.rst | 51 ++++++++++ > doc/opal-api/opal-slw-set-reg-100.rst | 5 + > doc/power-management.rst | 48 +++++++++ > hw/slw.c | 106 ++++++++++++++++++++ > include/opal-api.h | 3 +- > include/p9_stop_api.H | 18 ++++ > include/skiboot.h | 3 + > 7 files changed, 233 insertions(+), 1 deletion(-) > create mode 100644 doc/opal-api/opal-slw-self-save-reg-181.rst This patch enables OPAL interface to call stop-api and set self-save. Basically completes the infrastructure required to use the new self-save function provided by the microcode. --Vaidy